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Added 10 October 2026

adamant

/ˈæd.ə.mənt/ noun

Latin root: adamantem Wiktionary

noun Definition from WordNet 3.1, Princeton University. Pronunciation from Wiktionary, via Kaikki.org. More about adamant at Wordnik → Where our words come from →

Very hard native crystalline carbon valued as a gem.

adjective

Impervious to pleas, persuasion, requests, reason.
he is adamant in his refusal to change his mind

Origin

From Middle English adamant, adamaunt, from Latin adamantem, accusative singular form of adamās (“hard as steel”), from Ancient Greek ἀδάμαντ- (adámant-, “invincible”), oblique stem of ἀδάμας (adámas). Doublet of diamond.

From Wiktionary, via Kaikki.org (CC BY-SA)

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